package javc;

public class yunsuanfuhao {
    public static void main(String[] args) {
        int a = 10;
        int b = 20;
        a+=b;
        System.out.println(a);
        System.out.println(b);
         int s = 10;
         s += 1;
         //s = (INT)(S+1)
        System.out.println(s);

        int d = 10;
        int c = 20;
        System.out.println(d == c);
        System.out.println(d <= c);

    }
}
